Sash pulley wheel



April 16, 1929. SEELBACH 1,709,492

SASH PULLEY WHEEL Filed Dec. 27, 1927 INVENTOR John F. Gee I back W M/Z.

A TTORNEYS' Patented Apr. '16, 1929.

UNIYTED STATES PATENT/OFFICE.

JOHN F; SEELBACH, or GRAND RAPIDS, MICHIGAN, 'ASSIGNOR '10 GRAND'RAPIDS.

' HARDWARE COMPANY, or GRAND RAPIDS, MICHIGAN.

SASH PULLEY WHEEL.

Application filed December 27; 1921. Serial No. 242,537

This invention relates to improvements in sash pulley wheels. The invention, however, is capable of broader application.

The objects of the invention are First, to provide an improved simple and economical construction of sheet metal sash pulley.

Second, to provide an improved means of retaining the hub or bushing in such a pulley.

Objects pertaining to details and econo micsof my invention will definitely appear from the description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention .is

clearly defined and pointed out in the claims. A device embodying my inventlon is clearly illustrated in the accompanying drawing in which: I I I Fig. 1 is a side elevation view ofa sash pulley embodying the features of my inven tion. Fig. 2 is a detail transverse sectional View online 2'-2 of Fig. l showing details of the hub securing means.

Fig. 3

33 of Fig. 1 showing other details.

Fig. 4c is a detail elevation view of the hub or bushing.

' The parts will be identified by their numerals of reference which are the same in all views.

1 is the hub or bushing. 2-, 2 are the metal 7 side plates of the wheel forming a web 21 and a sash cord groove 22 in the periphery and expanded at 23 to form hub engaging flanges. The'hub 1 is provided with end shoulders 11 to receive the sheet metalsides which are perforated to correspond with the same. An annular groove 12 is out within the shoulder forming a yieldable annular rib 13 toward each end of thehub or bushing.

The parts are assembled with a drive fit and is a detail sectional vicw'on line together by eyelets 3, rivets orany suitable means.

The center flanges are crowded to place, being a drive fit, on the hub or bushing; The center flanges 23 are indented at 24 preferably at three points'equidistant around the hub. The projecting-annular rib 13 is broken down by the action of; thevtool which makes this depression and makes a very secure retaining means for the said hub or bushing. A lesser number of'depressions might beused. The depressions might be confined to one end of the hub or bushing. I prefer, however, to put the'same at both ends whichmakes a very complete and very strong wheel without the necessity of an riveting or other securmgof the hub or bushing in place. iThe hub is preferablyof metal but can be of any'suitable material. 1 As indicated, thepulley is capable of.considerable modification without departing from 1 my invention.

' Idesire toclaim'the invention broadly as Well as specifically as pointed out in the appended claims I Havingthus described my invention what I claim as new and desire tofsecure by Letters Patent is:

' 1. In a sash pulley wheel, the combination of-a hub or bushing shouldered at each end and having a groove formed within the shoulder to provide projecting annular ribs within the shoulders, sheet metal halves for the pulley conformed to form the sash cord grooveand hub flanges, and driven on to the said hub and indented into the said annular ribs as specified. 7

2. Ina sash pulley wheel, a hub with annular rib, a sheet metal side embracing said hand. 1

i' "I'YJOHN F. SEELBACH. 

